Numerical Modeling of High-Velocity Impact Welding

Nassiri, A.; Zhang, Shunyi; Abke, Tim; Vivek, Anupam; Kinsey, Brad L.; Daehn, Glenn S.

doi:10.1007/978-3-319-52132-9_9

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…Distinguished by simulation size, numerical calculations can be divided into finite element methods above the micron level and molecular dynamics algorithms below the micron level. The finite element method is divided into four formations: Lagrange [21], Euler [22], ALE (Arbitrary Lagrange-Euler) [23], and SPH (Smooth Particle Hydrodynamics) [24]. The Lagrange, Euler, ALE algorithms can calculate the deformation, collision pressure, temperature and other data of the base plate during the welding process, providing reference in terms of weldability window, process parameters, and other aspects [25,26].…”

Section: Introductionmentioning

confidence: 99%

Atomic motion behavior calculation and bonding mechanism analysis of explosive welding of high-strength and high-hardness titanium alloy Ti6Al4V/aluminum alloy 7075

Xiaoming,

Changgen,

Haitao

et al. 2023

Mater. Res. Express

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The explosive welding technology of titanium alloy Ti6Al4V/aluminum alloy 7075 is the most valuable research problem in the field of Ti/Al explosive welding. In this paper, the smooth particle hydrodynamics and molecular dynamics algorithms are used to conduct multi-scale numerical calculations on the explosive welding of Ti6Al4V and 7075. The interface morphology, interface atomic movement, lattice changes and crystal defects are comprehensively analyzed. With the calculation as a reference, the Ti6Al4V/7075 composite with a flat interface is prepared. The calculation results indicate that with the transformation of titanium aluminum crystal structure, a large number of various dislocations, mainly 1/6<110>dislocations, are generated on the titanium side; During explosive welding, uniform and stable element diffusion occurred. Element diffusion mainly occurred in the unloading stage when the pressure was 0. The melting zone and ablation zone were composed of TiAl and TiAl3, respectively; The fundamental reason for the combination of Ti6Al4V/7075 is the diffusion of elements and the solid-phase binding of atoms.

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Section: Introductionmentioning

confidence: 99%

Atomic motion behavior calculation and bonding mechanism analysis of explosive welding of high-strength and high-hardness titanium alloy Ti6Al4V/aluminum alloy 7075

Xiaoming,

Changgen,

Haitao

et al. 2023

Mater. Res. Express

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“…Vivek et al [1]). The majority of research so far focuses on welding through plastic deformation during impact with regard to both experimental [2] as well as modeling [3] findings. Similar to electromagnetic or electrohydraulic forming [4,5], a capacitor bank discharge is used to supply the process energy (Fig.…”

Section: Introductionmentioning

confidence: 99%

Part-optimized forming by spatially distributed vaporizing foil actuators

Hahn

Tekkaya

2021

Int J Mater Form

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Electrically vaporizing foil actuators are employed as an innovative high speed sheet metal forming technology, which has the potential to lower tool costs. To reduce experimental try-outs, a predictive physics-based process design procedure is developed for the first time. It consists of a mathematical optimization utilizing numerical forming simulations followed by analytical computations for the forming-impulse generation through the rapid Joule heating of the foils. The proposed method is demonstrated for an exemplary steel sheet part. The resulting process design provides a part-specific impulse distribution, corresponding parallel actuator geometries, and the pulse generator’s charging energy, so that all process parameters are available before the first experiment. The experimental validation is then performed for the example part. Formed parts indicate that the introduced method yields a good starting point for actual testing, as it only requires adjustments in the form of a minor charging energy augmentation. This was expectable due to the conservative nature of the underlying modeling. The part geometry obtained with the most suitable charging energy is finally compared to the target geometry.

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Electromagnetic Welding of Tubular Joints for Nuclear Applications

Sharma

2018

Lecture Notes on Multidisciplinary Industrial Engineering

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Numerical Modeling of High-Velocity Impact Welding

Cited by 5 publications

References 19 publications

Atomic motion behavior calculation and bonding mechanism analysis of explosive welding of high-strength and high-hardness titanium alloy Ti6Al4V/aluminum alloy 7075

Atomic motion behavior calculation and bonding mechanism analysis of explosive welding of high-strength and high-hardness titanium alloy Ti6Al4V/aluminum alloy 7075

Part-optimized forming by spatially distributed vaporizing foil actuators

Electromagnetic Welding of Tubular Joints for Nuclear Applications

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